The Secure Shell (SSH) protocol is a method for secure remote login and other secure network services over a public network such as the Internet. SSH services a number of applications across multiple platforms including UNIX, Windows, Mac, and Linux.
You can use SSH:
For login to a shell on a remote host, replacing the need for telnet and rlogin (see FIGURE 11-3 for an example of an application that uses SSH for this application)
For executing a single command on a remote host, replacing the need for rsh
For file transfers to a remote host
In combination with rsync to back up, copy, and mirror files securely
In conjunction with the OpenSSH server and client to create a full VPN connection
FIGURE 11-3 PuTTY ...
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